Vassilis Spanoulis (also commonly known as Bill Spanoulis or Billy Spanoulis, ; born 7 August 1982) is a Greek former professional basketball player and current professional basketball coach for Peristeri Athens of the Greek Basket League and the FIBA Champions League. Spanoulis spent the majority of his playing career in the Greek Basket League, winning four Greek League titles as a member of Panathinaikos Athens, and three Greek titles as a member of Olympiacos Piraeus. He also won three EuroLeague titles, one with the former club (2009), and two consecutive (2012 and 2013) with the latter. HoopsHype named Spanoulis one of the 75 Greatest International Players Ever in 2021. In 2022, he was named a EuroLeague Legend. He was also inducted into the Greek Basket League Hall of Fame in 2022. During his pro playing career, at a height of tall, Spanoulis played as a point guard-shooting guard, and was nicknamed Kill Bill, V-Span, Greek Lightning, and MVP ("Most Vassilis Player"), during his playing days Spanoulis was named the Balkan Athlete of the Year in 2009, the All-Europe Player of the Year in 2012 and 2013, the Vatican's World Athlete of the Year (Giuseppe Sciacca Award) in 2013, and the EuroLeague MVP the same year. He earned a record eight All-EuroLeague Team selections and was voted the EuroLeague's 2010–2020 Player of the Decade. He is also the EuroLeague's all-time career leader in total points scored. Spanoulis first played pro club basketball with Gymnastikos S. Larissas, and enjoyed a highly successful career start. His skill-set earned him a transfer to Athens and Maroussi, where he won the Greek Basket League's Best Young Player award for the 2002–03 season. Following an impressive 2004–05 season, during which he helped lead Maroussi to the Greek Basket League's finals and the 2005 EuroCup quarterfinals, he moved to Panathinaikos, where he became one of European basketball's major stars. In the 2005–06 EuroLeague season, Spanoulis made his debut in impressive fashion, earning his first All-EuroLeague Team selection as a rookie in the competition. After a stint in the NBA with the Houston Rockets during the 2006–07 season, he returned to Panathinaikos and helped lead them to a EuroLeague title in 2009, being voted the EuroLeague Final Four MVP in the process. Spanoulis' transfer to Olympiacos from Panathinaikos in the summer of 2010 marked a new step in his career, given Olympiacos' feisty rivalry with Panathinaikos. Within a